---
title: "eth_newFilter"
description: "创建新的日志过滤器（Arbitrum One）"
url: "https://blockreq.com/docs/zh-cn/build/api-reference/arbitrum/eth_newFilter/"
---

# eth_newFilter

**网络：** Arbitrum One · 主网 · Chain ID `42161`（`0xa4b1`）

**计为 1 个 Request。** 计费规则见 [Request Counting](https://blockreq.com/docs/zh-cn/pricing/request-counting/index.md)。

## 描述

创建新的日志过滤器。

## 参数

| 参数        | 类型       | 必填 | 说明     |
| ----------- | ---------- | ---- | -------- |
| `fromBlock` | `blockTag` | 否   | 起始区块 |
| `toBlock`   | `blockTag` | 否   | 结束区块 |
| `address`   | `address`  | 否   | 合约地址 |

## 请求

```json
{
  "jsonrpc": "2.0",
  "method": "eth_newFilter",
  "params": [
    {
      "fromBlock": "latest",
      "toBlock": "latest",
      "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
    }
  ],
  "id": 1
}
```

## 代码示例

**cURL**

```bash
curl -X POST https://arbitrum-one-rpc.blockreq.com/v1/rpc/public \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"fromBlock":"latest","toBlock":"latest","address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"}],"id":1}'
```

**TypeScript**

```typescript
const response = await fetch("https://arbitrum-one-rpc.blockreq.com/v1/rpc/public", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
  "jsonrpc": "2.0",
  "method": "eth_newFilter",
  "params": [
    {
      "fromBlock": "latest",
      "toBlock": "latest",
      "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
    }
  ],
  "id": 1
}),
});
const data = await response.json();
console.log(data.result);
```

**Python**

```python
import requests

response = requests.post(
    "https://arbitrum-one-rpc.blockreq.com/v1/rpc/public",
    json={
  "jsonrpc": "2.0",
  "method": "eth_newFilter",
  "params": [
    {
      "fromBlock": "latest",
      "toBlock": "latest",
      "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
    }
  ],
  "id": 1
}
)
print(response.json()["result"])
```

**Go**

```go
package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
)

func main() {
	payload := []byte(`{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"fromBlock":"latest","toBlock":"latest","address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"}],"id":1}`)
	resp, err := http.Post(
		"https://arbitrum-one-rpc.blockreq.com/v1/rpc/public",
		"application/json",
		bytes.NewBuffer(payload),
	)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	body, _ := io.ReadAll(resp.Body)
	var result map[string]interface{}
	json.Unmarshal(body, &result)
	fmt.Println(result["result"])
}
```

**viem**

```typescript
import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://arbitrum-one-rpc.blockreq.com/v1/rpc/public"),
});

const result = await client.request({
  method: "eth_newFilter",
  params: [{"fromBlock":"latest","toBlock":"latest","address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"}],
});
console.log(result);
```

**Foundry**

```bash
cast rpc --rpc-url https://arbitrum-one-rpc.blockreq.com/v1/rpc/public eth_newFilter {"fromBlock":"latest","toBlock":"latest","address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"}
```

**Hardhat**

```javascript
const { ethers } = require("hardhat");

async function main() {
  const provider = new ethers.JsonRpcProvider("https://arbitrum-one-rpc.blockreq.com/v1/rpc/public");
  const result = await provider.send("eth_newFilter", [{"fromBlock":"latest","toBlock":"latest","address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"}]);
  console.log(result);
}

main();
```